I had to laugh at this excerpt from that link above...
"I never had any problem starting but others did and it was standard practise to help your mates get a start. We used to go down to the park and start the wagons before breakfast and leave them running for an hour to warm up properly. I had a diverter on the exhaust where it went under the fuel tank and this blew some hot gas on to the bottom of the tank. It made a lot of greasy muck but I always had warm diesel! If someone had a flat battery I would give them a tow and we used to be busy for about half an hour getting everyone started up. This particular morning there was a furniture wagon which we couldn't get started, we flamed the intake with a petrol soaked rag and tried everything we knew but couldn't get a start. The batteries were OK so we put it down to frozen fuel lines and left him to it. When we came back from breakfast the fire brigade was there putting out the remains of the wagon. The young lad had resorted to desperate measures and lit a fire under the wagon, he warmed it up all right but lost the wagon and no doubt his job in the process."
McKev